I got SSLS, how do I play it?

My good friend Candor gift me a SSLS copy, I have it now, but my question is, how do I play it?

I tried but it opens a window with the next message:

Failed to initialize Direct3D.
Make sure you have at least DirectX 9.0c installed, have drivers for your
graphics card and have not disabled 3D acceleration
in display settings.
InitializeEngineGraphics failed

I'm a newbie in these settings, so I don't know how to download what it says, I tried, but it says is not compatible, please help!